<template>
  <el-container class="home-container">
    <!--页面头部区域-->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!--页面主体区域-->
    <el-container>
      <!--左侧边区域-->
      <el-aside :width="isCollpase ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>

        <!--侧边栏菜单-->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409eff"
          :unique-opened="true"
          :collapse="isCollpase"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath">
          <!--一级菜单-->
          <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">

            <!--一级菜单模板-->
            <template slot="title">
              <!--图标-->
              <i :class="icons[item.id]"></i>
              <!--文本-->
              <span>{{item.authName}}</span>
            </template>

            <!--二级菜单-->
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="addPathSession('/'+subItem.path)">
              <template slot="title">
                <!--图标-->
                <i class="el-icon-menu"></i>
                <!--文本-->
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>

          </el-submenu>
        </el-menu>

      </el-aside>
      <!--右侧区域-->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
  export default {
    data () {
      return {
        //菜单列表
        menulist: [],
        //一级菜单图标
        icons:{
          '125':'iconfont icon-user',
          '103':'iconfont icon-tijikongjian',
          '101':'iconfont icon-shangpin',
          '102':'iconfont icon-danju',
          '145':'iconfont icon-baobiao'
        },
        //是否折叠
        isCollpase: false,
        //菜单宽度
        menuWidth:'200px',
        //被激活链接地址
        activePath: ''
      }
    },
    created () {
      this.getMenuList()
      this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
      logout () {
        window.sessionStorage.clear()
        this.$router.push('/login')
      },
      //获取菜单
      async getMenuList () {
        const { data: res } = await this.$http.get('menus')
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.menulist = res.data
        console.log(this.menulist)
      },
      // 菜单折叠
      toggleCollapse(){
        this.isCollpase = !this.isCollpase
      },
      addPathSession(activePath){
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath = activePath
      }
    }
  }
</script>

<style lang="less" scoped>
  .home-container {
    height: 100%;
  }

  .el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    div {
      display: flex;
      align-items: center;
      span {
        margin: 20px;
      }
    }
  }

  .el-aside {
    background-color: #333744;
    .el-menu{
      border-right: none;
    }
  }

  .el-main {
    background-color: #eaedf1;
  }
  .iconfont{
    margin-right: 10px;
  }
  .toggle-button{
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
  }
</style>
